Unimicron investigated for allegedly relabeling Chinese chip components

The Taipei District Prosecutors Office is investigating Unimicron, a major global manufacturer of chip substrates and printed circuit boards, for allegedly relabeling components manufactured in China as being of Taiwanese origin. This practice, described as potential origin laundering, may have been used to bypass export controls and tariffs.

Unimicron is a critical supplier of ABF substrates, which are essential for advanced AI chip packaging. The company serves high-profile clients including Nvidia, Intel, Google, and Amazon. Following the news of the investigation, Unimicron shares fell by 10% during the Asian trading session as investors reacted to the potential reputational and supply chain risks.